Alternatives to obtain WP?

I recently used Paypal to purchase some WP so I could use them in RO, but the payment never went through. This has happened repeatedly with Paypal recently, so I finally asked my bank and because my EC card had a certain setting to it (I can withdraw and deposit money, but can't pay with it at registers) I apparently can't use Paypal for Online Paying anymore.

I live in Germany, so .. I guess I can't get a Gamecard from somewhere, either, right?
I was wondering what other alternatives I could use - is it possible to do a direct bank account-to-bank account transfer?